618039817671 has 4 divisors (see below), whose sum is σ = 824053090232. Its totient is φ = 412026545112.

The previous prime is 618039817667. The next prime is 618039817691. The reversal of 618039817671 is 176718930816.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 618039817671 - 2² = 618039817667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618039817691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103006636276 + ... + 103006636281.

It is an arithmetic number, because the mean of its divisors is an integer number (206013272558).

Almost surely, 2^618039817671 is an apocalyptic number.

618039817671 is a deficient number, since it is larger than the sum of its proper divisors (206013272561).

618039817671 is a wasteful number, since it uses less digits than its factorization.

618039817671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206013272560.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 618039817671 in words is "six hundred eighteen billion, thirty-nine million, eight hundred seventeen thousand, six hundred seventy-one".